HP350 is a RF power meter, based on continuous compression technology fully monolithic 500 MHz demodulating logarithmic amplifier , the logarithmic amplifier provides 92 dB dynamic range, even at frequencies up to 100 MHz can still provide error is ± l dB dynamic range of 88 dB.
The meter button to complete the operation, advantages: simple structure, easy to use, stable performance, reliable, high sensitivity and measurement speed and so on.
Application:
RF power measurement
Meter calibration

Technical Data Sheet:

Measuring power range: -80 ~ +10 dBm (external RF attenuator can be extended to 100dBm)
Measuring Power Resolution: 0.1 dBm
Measurement frequency range: 1 ~ 500 MHz
Measuring power: 1nW ~ 2W
Voltage: 7 ~ 12 VDC
Working current: <50 mA
Working temperature: -40 °C ~ 65 °C
Storage temperature: -40 °C ~ 65 °C
Size: 55mm * 45mm * 10 mm
Interface display and operating instructions:
Unit Description: dBm;
Key Description:
FUN: function keys; MODE: set changer interface; SEL: Self plus key or self minus key ;
Display measurement data
Interface display font:
The first line "RF-POW -80.3 dBm"
The second line "20uV 0nW"
Note: the dBm value signal are shown, input voltage, the input power.
Set the RF power attenuation values
Interface display font:
The first line "RF Attenuator"
The second line "SUB 000dB"
Key operation:
FUN: function keys; (select plus or minus direction) as shown SUB Subtract, shows ADD a plus. (Long press FUN key to save the setting values in dB)
SEL: Self plus key or minus key to Self;
Note: External different RF power attenuator, set the corresponding attenuation coefficient reads the correct power parameters.
Wiring:
P1 connection definition:
VDD :power supply positive (7V ~ 12V)
GND: power supply negative
P2 connection definition:
FX :Unused
RF:RF signal input 
GND: electronic scales power supply negative
Package Contents 
100% Brand New 
1 xRF power meter 0-500Mhz -80 ~10 dBm + 1602 backlight LCD